package com.shr.lease.web.admin.service.impl;

import com.shr.lease.common.minio.MinioProperties;
import com.shr.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Resource
    private MinioClient minioClient;
    @Resource
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        boolean bucketExists =
                minioClient.bucketExists(
                        BucketExistsArgs.builder()
                                .bucket(minioProperties.getBucketName())
                                .build()
                );

        if (!bucketExists) {
            minioClient.makeBucket(
                    MakeBucketArgs.builder()
                            .bucket(minioProperties.getBucketName())
                            .build()
            );

            minioClient.setBucketPolicy(
                    SetBucketPolicyArgs.builder()
                            .bucket(minioProperties.getBucketName())
                            .config(createBucketPolicyConfig(minioProperties.getBucketName()))
                            .build());
        }

        String filename =
                new SimpleDateFormat("yyyyMMdd").format(new Date())
                        + "/" + UUID.randomUUID()
                        + "-"
                        + file.getOriginalFilename();

        minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(minioProperties.getBucketName())
                        .object(filename)
                        //设置了contentType 可以预览
                        .contentType(file.getContentType())
                        //partSize  设置分片
                        .stream(file.getInputStream(), file.getSize(), -1)
                        .build());
        return String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), filename);


    }

    private String createBucketPolicyConfig(String bucketName) {

        return """
                {
                  "Statement" : [ {
                    "Action" : "s3:GetObject",
                    "Effect" : "Allow",
                    "Principal" : "*",
                    "Resource" : "arn:aws:s3:::%s/*"
                  } ],
                  "Version" : "2012-10-17"
                }
                """.formatted(bucketName);
    }
}
